Migrate to packages/modules/StatsD/lib/*

BUG: 167962588
Test: TH
Merged-In: I536a324182f70725a5fda0c36f7f9d4676fd49b9
Change-Id: I8b4ceadcdd0777468b6aaa3b8a57e765f19fb781
Exempt-From-Owner-Approval: Code Migration / Cleanup
22 files changed